On January 3, 1943, his Flying Fortress—B-17F-27-BO, 41-24620, nicknamed "snap! crackle! pop!"[1]—part of the 360th Bomb Squadron, 303rd Bomb Group,[2] was on a daylight bombing run over Saint-Nazaire, France, when German fighters shot off a section of the right wing, causing the aircraft to enter a deadly spin. This was Magee's seventh mission.

Magee was wounded in the attack but managed to escape from the ball turret. His parachute had been damaged and rendered useless by the attack, so he leapt from the plane without one, rapidly losing consciousness due to the altitude. He fell over four miles before crashing through the glass roof of the St. Nazaire railroad station. The glass roof shattered, mitigating the force of Magee's impact. Rescuers found him on the floor of the station.

Magee was taken as a prisoner of war and given medical treatment by his captors. He had 28 shrapnel wounds in addition to his injuries from the fall: several broken bones, severe damage to his nose and eye, lung and kidney damage, and a nearly severed right arm.

Magee was liberated in May 1945 and received the Air Medal for meritorious conduct and the Purple Heart. On January 3, 1993, the 50th anniversary of the attack, the people of St. Nazaire honored Magee and the crew of his bomber by erecting a 6-foot-tall (1.8 m) memorial to them.

After the war, he earned his pilot's license and worked in the airline industry in a variety of roles. He retired in 1979 and moved to northern New Mexico. He died in San Angelo, Texas, on December 20, 2003, from stroke and kidney failure, at the age of 84.